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Hi,<br class="">
<font color="#5856d6" class=""><br class="">
</font>I’m doing local experiments (1Gbps connection) with two servers: OnDemandServer and openRTSPClient. I want to test 4K video streaming (~15Mbps) when RTT is large. So I inject delay via Linux’s traffic controller (aka tc). <br class="">
When an RTT that is larger certain value (I tested with <b class="">100ms</b> mostly), RTP over TCP gets very slow and stops after few seconds. I know TCP slow start has impact on it but I don’t get it why TCP cannot catch after couple RTTs. I increased TCP
buffer size to a large values (~10MB) on sending and receiving ends so it should not be buffer size issue. I checked tcpdump outputs and realized that RTSP server does not increase cwnd after certain value even sending/receiving congestion windows were not
full and ACKs are received on time. So I’d appreciate if you tell me whether or not there is a tunable knob to handle this issue?<br class="">
<font color="#5856d6" class=""><br class="">
<br class="">
</font>Thanks<br class="">
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<div class="">Engin</div>
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